Leases - Summary of Company's Lease Portfolio and Balance Sheet Components (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 439.5	$ 469.4
Operating lease current	144.0	145.0
Operating lease noncurrent	$ 301.2	$ 329.9
Operating Lease, Weighted Average Remaining Lease Term	4 years 2 months 12 days	4 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	3.40%	3.60%